Behind-the-scenes video, advice from the experts

Below:

In an hour-long broadcast of Dateline NBC to air on Sunday, April 23 7 p.m., co-anchor Ann Curry takes an in-depth look at what would happen if a virus like the avian flu caused a pandemic.

For the special report, “Dateline” consults experts on the front lines from the Center for Biosecurity at the University of Pittsburgh, the Centers for Disease Control, the United Nations, the U.S. Department of Health and Human Services and the World Health Organization. In an effort to offer viewers an understanding of how a flu pandemic would affect their lives, the report illustrates how the virus could potentially enter and spread throughout cities in America and around the world, visualizing possible scenarios resulting from human contact.

Below are WebExtra videos from Dateline in advance of the special report:

Dateline wires the home of a volunteer, Jenny, from top to bottom with hidden cameras. Then she called repairmen to her house for a simple problem we created as a test with Jenny's pool. NBC's Chris Hansen reports.